Positioning hinge adapted between a computer main body and a display

ABSTRACT

A positioning hinge for a notebook computer has multiple collars each provided with an obliquely formed friction plate. The friction plate engages a side face of an extension of a bracket configured to attach securely to a body of the computer to provide the necessary friction force to hole the monitor at an angle relative to the body of the computer. With such an arrangement, the friction force can be adjusted to accommodate different weights of the monitor by reducing or increasing the number of the collars.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a positioning hinge, and more particularly to a positioning hinge having multiple collars engaged with a bracket to which a computer body is securely mounted and a hinge pin to which a computer monitor is securely mounted. The multiple collars are configured to provide different friction forces to support the computer monitor with respect to the bracket, such that a suitable friction force is applied to support the monitor based on the weight of the monitor.

[0003] 2. Description of Related Art

[0004] Positioning hinges generally provide a friction force to hold the monitor of a notebook computer at a desired angle. Different models and brands of notebook computers have different weights and sizes. To accommodate computers with different weights, different kinds of positioning hinges have been developed to solve manufacturers' specific requirements. However, each positioning hinge design provides only one fixed friction force to hold a specific monitor with respect to the body of the notebook computer. Consequently, if the production line changes from one specification to another, all the related parts have to be changed accordingly. The manufacturer will have to pay for all the design, development and testing cost associated with a design change, even though the change may only involve a change in weight of a specific part. In other word, there is no part that is able to be used between different specifications of parts.

[0005] With reference to FIGS. 14, a conventional positioning hinge is mainly composed of a positioning device (34) having an attachment arm (30) and a friction plate (32) and a cam (36) with a groove (38) defined to correspond to the friction plate (32). A spring (35) is secured between a positioning hinge pin (37) and the positioning device (34). With the foregoing structure, the manufacturer will have to use many different parts to assemble a positioning hinge to meet the friction force requirement to lift and hold the monitor.

[0006] To overcome the shortcomings, the present invention tends to provide an improved positioning hinge to mitigate and obviate the aforementioned problems.

SUMMARY OF THE INVENTION

[0007] The main objective of the invention is to provide a positioning hinge in which the friction force can be adapted to secure and hold the weight of a monitor when the monitor is opened. The positioning hinge in accordance with the present invention has a positioning hinge pin, a bracket, a spring securely held between the positioning hinge pin and the bracket and multiple collars engaged with a side of the bracket. The friction force between the bracket and the collars is able to be adapted to cope with the weight of the monitor so that when the monitor is opened, the monitor is held in position.

[0008] Another objective of the invention is to provide a positioning hinge that has less parts than the conventional positioning hinge as described in the background. Thus, the fabrication cost can be reduced.

[0009] Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010]FIG. 1 is a perspective view of the positioning hinge in accordance with the present invention;

[0011]FIG. 2 is an exploded perspective view of the positioning hinge in FIG. 1;

[0012]FIG. 3 is a perspective view of another embodiment of the positioning hinge in accordance with the present invention;

[0013]FIG. 4 is an exploded perspective view of the positioning hinge in FIG. 3;

[0014]FIG. 5 is a perspective view of another embodiment of the positioning hinge in accordance with the present invention;

[0015]FIG. 6 is an exploded perspective view of the positioning hinge in FIG. 5;

[0016]FIG. 7 is a perspective view of another embodiment of the positioning hinge in accordance with the present invention;

[0017]FIG. 8 is an exploded perspective view of the positioning hinge in FIG. 7;

[0018]FIG. 9 is an operational end view of the positioning hinge in FIG. 1 with the notebook computer monitor closed;

[0019]FIG. 10 is an operational end side view of the positioning hinge in FIG. 1 with the notebook computer monitor partially open;

[0020]FIG. 11 is an operational end plan view of the pivot positioning hinge in FIG. 1 with the notebook computer monitor fully open;

[0021]FIG. 12 is a perspective view of still another preferred embodiment of the invention;

[0022]FIG. 13 is an exploded perspective view of the preferred embodiment of FIG. 12; and

[0023]FIG. 14 is an exploded perspective view of a conventional positioning hinge.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

[0024] With reference to FIG. 1 and 2, a positioning hinge in accordance with the present invention has an elongated positioning hinge pin (10), a bracket (15), a spring (16), at least two washers (17), multiple collars (18) and a nut (21).

[0025] The positioning hinge pin (10) has an attachment plate (11) on one end, a truncated section (12) on the other end and an annular flange (14). The attachment plate (11) is configured to be securely attached to the monitor of a computer. The truncated section (12) with a threaded end (13). The flange (14) is formed at the joint of the attachment plate (11) and the truncated section (12) and has a longitudinal slit (141).

[0026] The bracket (15) is configured to securely attaching to the body of the computer and has a tab (151) extending out from a side face of the bracket (15).

[0027] The spring (16) is mounted around the truncated section (12) and is held by the flange (14). The ends of the spring (16) are respectively held by the slit (141) and the tab (151) of the bracket (15). One protruding end of the spring (16) is securely received in the slit (141) and the other protruding end of the spring (16) abuts the bottom of the tab (151).

[0028] At least on washer (17) is provided on each side of an extension (152) of the bracket (15). The extension (152) has a through hole (153) defined to correspond to the truncated section (12) of the positioning hinge pin (10) to allow the truncated section (12) to extend through the through hole (153) in the extension (152).

[0029] Each collar (18) has a keyed opening (19) defined to allow the truncated section (12) to extend through the opening (19). When the truncated section (12) extends through the openings (19) of the collars (18), the nut (21) is screwed onto the threaded end (13) of the positioning hinge pin (10). A friction plate (20) is obliquely formed on the outside edge of each collar (18). After the assembly of all the parts and the positioning hinge pin (10) rotates relative to the bracket (15), the friction plate (20) on the collar (18) engages with a side face of the extension (152) to provide the necessary friction force to hold the monitor in place.

[0030] With reference to FIGS. 3 and 4, another embodiment of the positioning hinge in accordance with the present invention has an elongated positioning hinge pin (10A), a bracket (15A), a spring (16A), at least two washers (17A) and multiple collars (18A).

[0031] The positioning hinge pin (10A) has an attachment plate (11A) on one end, a truncated section (12A) on the other end and an annular flange (14A). The attachment plate (11A) is configured to be securely attached to the monitor of a computer. The flange (14A) is formed at the junction of the attachment plate (11) and the truncated section (12)

[0032] The bracket (15A) is configured to securely attach to the body of the computer and has a tab (151A) extending out from a side face of the bracket (15A).

[0033] The spring (16A) is mounted around the truncated section (12A) and is held by the bracket (15A). One distal end of the spring (16A) is held by the tab (151) on the bracket (15A) and the other distal end of the spring (16A) is inserted into an aperture (171) of a keyed washer (17A) inside the bracket (15A).

[0034] At least one washer (17A) is provided on each side of each extension (152A) of the bracket (15A). Each of the extensions (152A) has a through hole (153A) defined to correspond to the truncated section (12A) of the positioning hinge pin (10A) to allow the truncated section (12A) to extend through the through holes (153A) in the extensions (152A).

[0035] A keyed opening (19A) is defined in each collar (18A) to allow the truncated section (12A) to extend through the keyed opening (19A). After assembly of the truncated section (12A) with the bracket (15A), a retainer washer (30) is securely provided on the distal end of the truncated section (12A) to hold the collars (18A) and to prevent the collars (18A) from loosening. A friction plate (20A) is obliquely formed on the outside edge of each collar (18A). After the assembly of all the parts and the positioning hinge pin (10A) rotates relative to the bracket (15A), the friction plate (20A) on the collar (18A) engages with a side face of the extension (152A) to provide the necessary friction force to hold the monitor in place. One end of the spring (16A) securely abuts under the bottom of the tab (15A), and the other end of the spring (16A) is held in an aperture (171) in a keyed washer (17A).

[0036] With reference to FIGS. 5 and 6, elements identical to the previously described embodiments of FIG. 1 and FIG. 3 will use the same reference numerals.

[0037] The positioning hinge pin (10) has an attachment plate (11) on one end, a truncated section (12) on the other end and an annular flange (14). The attachment plate (11) is configured to be securely attached to the monitor of a computer. The truncated section (12) has a threaded end (13). The flange (14) is formed at the junction of the attachment plate (11) and the truncated section (12).

[0038] The bracket (15B) is configured to be securely attached to the body of the computer and has a tab (15B) extending out from a side face of the bracket (15B).

[0039] The spring (16) is mounted around the truncated section (12). One distal end of the spring (16) is held by the tab (151B), as shown in FIG. 5, and the other distal end of the spring (16) is secured in a slit (141) in the flange (14).

[0040] At least one washer (17) is provided on each side of extensions (152B) on the bracket (15B). A through hole (153B) is defined in each extension (152B) to correspond to the truncated section (12) of the positioning hinge pin (10) to allow the truncated section (12) to extend through the through holes (153B) in the extensions (152B).

[0041] A keyed opening (19) is defined in each collar (18) to allow the truncated section (12) to extend through. After the truncated section (12) passes through the openings (19) of the collars (18), the nut (21) is screwed onto the threaded end (13) of the positioning hinge pin (10). A friction plate (20) is obliquely formed on the outside edge of each collar (18). After the assembly of all the parts and the positioning hinge pin (10) rotates relative to the bracket (15B), the friction plate (20) on the collar (18) engages with a side face of the extension (152B) to provide the necessary friction force to hold the monitor in place. All the collars (18) are located between the two extensions (152B) and a washer (17) is provided between the collar (18) and a side face of the extension (152B) to avoid direct friction between the collars (18) and the extensions (152B).

[0042] With reference to FIGS. 7 and 8 of still another preferred embodiment of the invention, wherein elements identical to the embodiments of FIG. 1, 3 and 5 will use the same reference numerals.

[0043] The positioning hinge pin (10) has an attachment plate (11) on one end, a truncated section (12) and a flange (14). The attachment plate ( 11) is configured to be securely attached to the monitor of a computer. The truncated section (12) has a threaded end (13). The flange (14) is formed at the junction of the attachment plate (11) and the truncated section (12).

[0044] The bracket (15B) is configured to be securely attached to the body of the computer and has a tab (151B) extending out from a side face of the bracket (15B).

[0045] The spring (16) is mounted around the truncated section (12) and one end of the spring (16) is held by a cutout (172) defined in a keyed washer (17A) and the other end of the spring is held by the tab (151B) of the bracket (15B).

[0046] At least one washer (17A) is provided on each side of each extension (152B) of the bracket (15B). A through hole (153B) is defined in each extension (152B) to correspond to the truncated section (12) of the positioning hinge pin (10) to allow the truncated section (12) to extend through the through holes (153B) in the extensions (152B).

[0047] A keyed opening (19) is defined in each collar (18) to allow the truncated section (12) to extend through. After the truncated section (12) passes through the openings (19) in the collars (18), the nut (21) is then screwed onto the threaded end (13) of the positioning hinge pin (10). A friction plate (20) is obliquely formed on the outside edge of each collar (18). After the assembly of all the parts and the positioning hinge pin (10) rotates relative to the bracket (15B), the friction plate (20) in the collar (18) engages with a side face of the extension (152A) to provide the necessary friction force to hold the monitor in place. Part of the collars (18) are received between the two extensions (152B), and a washer (17) is provided between the outermost/innermost collars (18) and the side face of the extension (152B) to avoid direct friction between the collars (18) and the extensions (152B). Other collars (18) are provided between the side face of the extension (152B) and the nut (21). With such an arrangement, the friction force necessary to hold the monitor of the computer can be adjusted by increasing or decreasing the number of collars (18).

[0048] With reference to FIGS. 9, 10 and 11, the friction plates (20) do not engage the side face of the extension (152,152A) when the monitor is closed. When the monitor moves gradually relative to the body of the computer, the friction plates (20) engage with the side face of the extension (152,152A) to provide a supporting force to hold the monitor in place.

[0049] With still another preferred embodiment of the invention of FIGS. 12 and 13, it is noted that the positioning hinge of the invention has two springs (a first spring and a second spring (16,16′)) each provided on one side of each of the two extensions (152B) of the bracket (15B). The bracket (15B) has a first tab (151B) and a second tab (151B′) respectively formed on one of the two extensions (152B) and opposite with respect to each other.

[0050] The basic structure of this preferred embodiment is almost the same as those described before. However, in this embodiment, two keyed washers (17A) are provided to each of the extensions (152B) and a tube (162) is received in the second spring (16′). When the truncated section (12) of the hinge pin (10) is inserted through the through holes (153B) of the bracket (15B), as foregoing described, the truncated section (12) continues to extend through the tube (162), the second spring (16′), a keyed washer (171′) and threadingly engaged with the nut (21). It is noted from the drawings that the first ends of the first spring (16) and the second spring (16′) are respectively held by the first tab (151B) and the second tab (151B′) and the second ends of the first spring (16) and the second spring (16′) are respectively received in the slit (171, 171′). Before the extension of the truncated section (12), the multiple collars (18) are inserted between the two extensions (152B). Thereafter, the positioning hinge is able to provide a better holding effect to the monitor to the body.

[0051] It is to be understood, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

What is claimed is:
 1. A positioning hinge adapted between a computer body and a display to allow the display to pivot with respect to the computer body, the positioning hinge comprising: a positioning hinge pin having an attachment plate on one end configured to be securely attached to the display of a computer, a truncated section on the other end with a threaded end and an annular flange formed at the junction of the attachment plate and the truncated section; a bracket adapted for securely attaching to the body of the computer and having at least one extension with a through hole through which the truncated section of the positioning hinge pin passes; at least one spring mounted around the truncated section, the distal ends of the spring respectively held by the flange and the extension of the bracket; multiple collars securely engaged with a side face of the extension and each provided with an obliquely formed friction plate and a keyed opening defined to allow the truncated section to extend through so that the collars are able to provide friction when the positioning hinge pin pivots; and a nut screwed onto the threaded end of the positioning hinge pin to hold the collars.
 2. The positioning hinge as claimed in claim 1, wherein two parallel extensions are formed on the bracket.
 3. The positioning hinge as claimed in claim 2, wherein the collars are securely received between the two parallel extensions.
 4. The positioning hinge as claimed in claim 2, wherein the annular flange has a slit defined to receive one distal end of the spring and the bracket has a tab formed to correspond to and restrain the other distal end of the spring.
 5. The positioning hinge as claimed in claim 2, wherein a portion of the collars are received between the two parallel extensions and the other portion of the collars are securely mounted outside the extension.
 6. The positioning hinge as claimed in claim 1, wherein at least one washer is provided on each side of the extension of the bracket.
 7. The positioning hinge as claimed in claim 2, wherein at least one washer is provided on each side of the extension of the bracket.
 8. The positioning hinge as claimed in claim 3, wherein at least one washer is provided on each side of the extension of the bracket.
 9. The positioning hinge as claimed in claim 4, wherein at least one washer is provided on each side of the extension of the bracket.
 10. The positioning hinge as claimed in claim 5, wherein at least one washer is provided on each side of the extension of the bracket.
 11. The positioning hinge as claimed in claim 1, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 12. The positioning hinge as claimed in claim 2, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 13. The positioning hinge as claimed in claim 3, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 14. The positioning hinge as claimed in claim 4, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 15. The positioning hinge as claimed in claim 5, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 16. The positioning hinge as claimed in claim 6, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 17. The positioning hinge as claimed in claim 7, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 18. The positioning hinge as claimed in claim 8, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 19. The positioning hinge as claimed in claim 9, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket.
 20. The positioning hinge as claimed in claim 10, wherein a first and a second springs are respectively and oppositely provided on the bracket, first distal ends of the first and the second springs are respectively held by a slit defined in the washer corresponding to an adjacent spring; and second distal ends of the first and the second springs are respectively held by a first and a second tabs oppositely formed on the extension of the bracket. 